What was the most potent source of power in the medieval world?

Medieval period was characterized by philosophical doctrines especially Christianity. Medieval period is a period deeply entrenched in religion, especially theology and anything that has to do with the church. As a result of this, many of the medieval philosophers are churchmen. There is a belief in the Supreme Being and his sovereignty

the map that was shown mostly had eastern asia highlighted. the answer would mostly likely be "the spread of communism into eastern asia set the stage for the korean war."

hopefully this .